广西某含银难选铅锌矿石选矿试验  

Experimental Study on a Refractory Silver-bearing Lead-zinc Ore of Guangxi

作　　者：袁华玮 刘全军[1,2] 张辉[1,2] 张一超[1,2] 

机构地区：[1]复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《金属矿山》2015年第11期91-94,共4页Metal Mine

摘　　要：广西某含银铅锌矿石铅氧化程度很高,各矿物共生关系密切,嵌布粒度较细,泥化较严重,属极难选氧化铅锌矿石。为确定该矿石的开发利用方案,对该矿石进行了选矿试验研究。结果表明,在磨矿细度为-0.074 mm占92%的情况下,采用1粗1扫2精选硫化铅、1粗1扫2精选锌、1粗2扫3精选氧化铅、中矿顺序返回流程,最终可获得铅品位为42.21%、含银1 682.67 g/t、铅回收率为41.40%、银回收率为37.28%的硫化铅精矿,锌品位为48.86%、含银242.00 g/t、锌回收率为78.56%、银回收率为21.69%的锌精矿,以及铅品位为48.27%、含银2 336.28g/t、铅回收率为34.80%、银回收率为38.06%的氧化铅精矿,铅总精矿铅品位为44.77%、铅回收率为76.20%、银品位为1 959.83 g/t、银回收率为75.34%。试验指标较理想,可作为该矿石开发利用依据。There is a silver-bearing lead-zinc ore with high oxidation rate,every mineral are closely associated with each other and fine disseminated, thus serious sliming, belongs to refractory oxidation lead-zinc ore. Beneficiation experiment was conducted in order to exploitation and utilization the ore. The results indicated that under the condition of the grinding fineness-0. 074 mm accounted for 92%,utilize the flow of one roughing-two cleaning-one scavenging to float lead sulfide,one roug-hing-two cleaning-one scavenging to float zinc,and one roughing-three cleaning-two scavenging to float lead oxide,lead sulfide concentrate contain 42. 21% Pb and 1 682. 67 g/t silver,with lead recovery of 41. 40% and silver recovery of 37. 28%,zinc concentrate contain 48. 86% Zn and 242. 00 g/t silver,with zinc recovery of 78. 56% and silver recovery of 21. 69%,lead ox-ide concentrate contain 48. 27% Pb and 2 336. 28 g/t silver,with lead recovery of 34. 80% and silver recovery of 38. 06%, the total lead concentrate contain 44. 77% Pb and 1 959. 83 g/t silver,with lead recovery of 76. 20% and silver recovery of 75. 34%. The test index is relatively proper to be a basis for development and utilization of minerals.

关 键 词：氧化铅锌矿石 优先浮选 抑锌浮铅 

分 类 号：TD923.7[矿业工程—选矿]